git://bbs.cooldavid.org / net-next-2.6.git / blame
| Commit | Line | Data |
|---|---|---|
| 0f185971 MLJ |
1 | /* |
| 2 | * arch/arm/mach-ixp4xx/avila-pci.c | |
| 3 | * | |
| 4 | * Gateworks Avila board-level PCI initialization | |
| 5 | * | |
| 6 | * Author: Michael-Luke Jones <mlj28@cam.ac.uk> | |
| 7 | * | |
| 8 | * Based on ixdp-pci.c | |
| 9 | * Copyright (C) 2002 Intel Corporation. | |
| 10 | * Copyright (C) 2003-2004 MontaVista Software, Inc. | |
| 11 | * | |
| 12 | * Maintainer: Deepak Saxena <dsaxena@plexity.net> | |
| 13 | * | |
| 14 | * This program is free software; you can redistribute it and/or modify | |
| 15 | * it under the terms of the GNU General Public License version 2 as | |
| 16 | * published by the Free Software Foundation. | |
| 17 | * | |
| 18 | */ | |
| 19 | ||
| 20 | #include <linux/kernel.h> | |
| 21 | #include <linux/pci.h> | |
| 22 | #include <linux/init.h> | |
| 23 | #include <linux/irq.h> | |
| 24 | #include <linux/delay.h> | |
| 25 | ||
| 26 | #include <asm/mach/pci.h> | |
| 27 | #include <asm/irq.h> | |
| a09e64fb | 28 | #include <mach/hardware.h> |
| 0f185971 MLJ |
29 | #include <asm/mach-types.h> |
| 30 | ||
| 31 | void __init avila_pci_preinit(void) | |
| 32 | { | |
| 6cab4860 DES |
33 | set_irq_type(IRQ_AVILA_PCI_INTA, IRQ_TYPE_LEVEL_LOW); |
| 34 | set_irq_type(IRQ_AVILA_PCI_INTB, IRQ_TYPE_LEVEL_LOW); | |
| 35 | set_irq_type(IRQ_AVILA_PCI_INTC, IRQ_TYPE_LEVEL_LOW); | |
| 36 | set_irq_type(IRQ_AVILA_PCI_INTD, IRQ_TYPE_LEVEL_LOW); | |
| 0f185971 MLJ |
37 | |
| 38 | ixp4xx_pci_preinit(); | |
| 39 | } | |
| 40 | ||
| 41 | static int __init avila_map_irq(struct pci_dev *dev, u8 slot, u8 pin) | |
| 42 | { | |
| 43 | static int pci_irq_table[AVILA_PCI_IRQ_LINES] = { | |
| 44 | IRQ_AVILA_PCI_INTA, | |
| 45 | IRQ_AVILA_PCI_INTB, | |
| 46 | IRQ_AVILA_PCI_INTC, | |
| 47 | IRQ_AVILA_PCI_INTD | |
| 48 | }; | |
| 49 | ||
| 50 | int irq = -1; | |
| 51 | ||
| 52 | if (slot >= 1 && | |
| 53 | slot <= (machine_is_loft() ? LOFT_PCI_MAX_DEV : AVILA_PCI_MAX_DEV) && | |
| 54 | pin >= 1 && pin <= AVILA_PCI_IRQ_LINES) { | |
| 55 | irq = pci_irq_table[(slot + pin - 2) % 4]; | |
| 56 | } | |
| 57 | ||
| 58 | return irq; | |
| 59 | } | |
| 60 | ||
| 61 | struct hw_pci avila_pci __initdata = { | |
| 62 | .nr_controllers = 1, | |
| 63 | .preinit = avila_pci_preinit, | |
| 64 | .swizzle = pci_std_swizzle, | |
| 65 | .setup = ixp4xx_setup, | |
| 66 | .scan = ixp4xx_scan_bus, | |
| 67 | .map_irq = avila_map_irq, | |
| 68 | }; | |
| 69 | ||
| 70 | int __init avila_pci_init(void) | |
| 71 | { | |
| 72 | if (machine_is_avila() || machine_is_loft()) | |
| 73 | pci_common_init(&avila_pci); | |
| 74 | return 0; | |
| 75 | } | |
| 76 | ||
| 77 | subsys_initcall(avila_pci_init); | |
| 78 |